When Anne and Jim are playing pool, Anne hits a couple of balls, sending them scattering across the table. In the next shot, all of the balls are lined up in a row.
Studio lights reflected in the priest's glasses when he is marrying Gerry and Michael.
When Michael finds the sandwich waiting for him, studio lights are reflected in the glass of a picture frame hanging on the wall, to the left of the scene.
As the camera pulls away from a close-up of Geraldine's 1933 trophy, the movement of the camera is reflected in the plate on the front. The shadows of the camera equipment are also visible as the camera pulls further back.
When Gerry arrives at the Talbots' costume party and is going towards the staircase, the shadow of pretty much all the sound equipment, the boom pole and mike, fall across a couple of partygoers in the foreground.